Ledin, George <br/><br/>
The COBOL programmer's book of rules / 
George Ledin, Jr., Michael Kudlick, Victor Ledin 
 - Belmont, Calif. :  Lifetime Learning Publications,  1983 
 - 221 p. :  23 cm. 
<br/><br/>Includes index Bibliography : p. 206-216 
<br/><br/><label>ISBN: </label>0534979238 
<br/><br/><label>LCCN: </label>83-809 
<br/><br/><label>Subjects--Topical Terms: </label><br/>COBOL (Computer program language)